l =len(p)
r = []
cnts = [0]*26
p_cnts = [0]*26

for i in xrange(l):
    p_cnts[ord(p[i]) - 97] += 1

for i in xrange(l - 1):
    cnts[ord(s[i]) - 97] += 1

for i in xrange(0, len(s) - l + 1):
    cnts[ord(s[l + i - 1]) - 97] += 1
    if cnts == p_cnts:
        r += [i]
        cnts[ord(s[i]) - 97] -= 1

return r